Lonchidion

Lonchidion is a genus of extinct Hybodontiform shark in the family Lonchidiidae. The genus first appears in the fossil record during the late Triassic and continues to be found until the late cretaceous.

Lonchidion
Temporal range: Triassic to Cretaceous
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: †Hybodontiformes
Family: †Lonchidiidae
Genus: †Lonchidion
Estes, 1964

Lonchidion was first described by R. Estes in 1964, and the type species is L. selachas. Fossils of Lonchidion have been discovered across North America, Eurasia, India and northwest Africa in sediments representative of a variety of environments. A new species, L. ferganensis, was described by Jan Fischer, Sebastian Voigt, Jörg W. Schneider, Michael Buchwitz and Silke Voigt in 2011, from fossilized teeth and egg capsules.[1]

Species
  • Lonchidion anitae Thurmond, 1971
  • Lonchidion breve Patterson, 1966
  • Lonchidion crenulatum Patterson, 1966
  • Lonchidion humblei Murry, 1981[2]
  • Lonchidion indicus Yadagiri, 1986
  • Lonchidion inflexum Underwood & Rees, 2002
  • Lonchidion microselachos Estes & Sanchíz, 1982
  • Lonchidion selachas Estes, 1964
  • Lonchidion selachos Estes, 1964
  • Lonchidion striatum Patterson, 1966
  • Lonchidion ferganensis Fischer et al., 2011

References
  1. Jan Fischer, Sebastian Voigt, Jörg W. Schneider, Michael Buchwitz and Silke Voigt (2011). "A selachian freshwater fauna from the Triassic of Kyrgyzstan and its implication for Mesozoic shark nurseries". Journal of Vertebrate Paleontology 31 (5): 937–953. doi:10.1080/02724634.2011.601729.
  2. A New Species of Freshwater Hybodont from the Dockum Group (Triassic) of Texas Phillip A. Murry. Journal of Paleontology, Vol. 55, No. 3 (May, 1981), pp. 603-607
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